Polymerizable mixture composition, use of said mixture composition, and a dental prosthetic

Abstract

The invention describes a polymerisable mixture composition containing a liquid or semi-solid component A with at least one monomer portion and one, preferably powdery, solid component B on a polymethyl methacrylate (PMMA) base with a filler and/or additives, the liquid or semi-solid component A additionally having at least one oligomeric or polymeric compound modifying the monomer portion and which is miscible with the monomer portion. Furthermore, use of the mixture composition and a moulded part, for example a dental prosthesis, produced from the latter, is specified.

1 . A polymerisable mixture composition containing a liquid or semi-solid component A with at least one monomer portion and one solid component B on a polymethyl methacrylate (PMMA) base with a filler and/or additives, the liquid or semi-solid component A additionally having at least one oligomeric or polymeric compound modifying the monomer portion and which is miscible with the monomer portion. 
     
     
         2 . The polymerisable mixture composition according to  claim 1 , characterised in that the solid component B and the liquid or semi-solid component A contain initiator components. 
     
     
         3 . The polymerisable mixture composition according to  claim 1  or  2 , characterised in that the portion of oligomeric or polymeric compound in the liquid or semi-solid component A comes within a range of between 0.1 and 50% by weight, preferably between 0.1 and 30% by weight, preferably between 0.5 and 25% by weight, and particularly preferably between 1 and 20% by weight. 
     
     
         4 . The polymerisable mixture composition according to any of  claims 1  to  3 , characterised in that at least one oligomeric or polymeric compound is a polyorganosiloxane. 
     
     
         5 . The polymerisable mixture composition according to any of  claims 1  to  4 , characterised in that the polymer compound or the at least one polyorganosiloxane is selected from the group consisting of polydimethylsiloxanes (PDMS), polydiphenylsiloxanes (PDPS), polymethylphenylsiloxanes (PMPS) and/or mixtures of the latter. 
     
     
         6 . The polymerisable mixture composition according to  claim 4  or  5 , characterised in that polyorganosiloxane is homogeneously miscible with the monomer portion of the liquid or semi-solid component A and/or has a preferably linear chain structure. 
     
     
         7 . The polymerisable mixture composition according to  claim 6 , characterised in that the average number (n) of linear polyorganosiloxane groups comes within a range of between 2 and 500, preferably between 2 and 200, preferably between 5 and 200, preferably between 5 and 150, particularly preferably in the range of between 7 and 75, preferably between 7 and 50. 
     
     
         8 . The polymerisable mixture composition according to either of  claim 6  or  7 , characterised in that the polyorganosiloxane chain structure is chemically modified. 
     
     
         9 . The polymerisable mixture composition according to  claim 8 , characterised in that the polyorganosiloxane chain structure is chemically modified by means of substituents, preferably by means of polycaprolactones, particularly preferably unsaturated groups, preferably (meth)acryl groups. 
     
     
         10 . The polymerisable mixture composition according to any of  claims 1 - 9 , characterised in that the polymerised mixture composition or the plastic mould has a fracture toughness (K max )≧1.9 kJm 1/2  and an energy of rupture ≧900 J/m 2 . 
     
     
         11 . The use of a polymerisable mixture composition according to any of  claims 1 - 9  for the production of a plastic mould, characterised in that the polymerised mixture composition or the plastic mould has a fracture toughness (K max )≧1.9 kJ/m 1/2  and an energy of rupture 900 J/m 2 . 
     
     
         12 . The use according to  claim 11 , characterised in that the polymerisable mixture composition is used as a repair material for this type of mould or the like. 
     
     
         13 . The use of a polymerisable mixture composition according to  claim 11  or  12 , characterised in that the plastic mould produced is used as a dental prosthesis body and satisfies the minimum requirements according to ISO for high impact plastics. 
     
     
         14 . A dental prosthesis, produced from a polymerisable mixture composition according to at least one of  claims 1 - 10 .